Device for handling bar material in rolling mills



Nov; 24, 1931. P. G. PALMGREN DEVICE FOR HANDLING BAR MATERIAL IN ROLLING MILLS Filed Nov. 26. 1929 2 Sheets-Sheet 1- h J n. M w w. an 4.. a fl mmr u Qw r H mm Q Ar M\ EIL v w 1 Z I 3 O, I V N\ Nw m m ww INVENTOR PER GUM/ ARPALMEM/v ATTORNEY NOV. 24, 1931 p PALMGREN 1,833,330

DEVICE FOR HANDLING BAR MATERIAL IN ROLLING MILLS Filed Nov. 26. 1929 2 sheets-sheet 2 tam- :4- qI 31 \H W H H o 4 INVENTOR PEAGl/IV/VAR PAL/wan? 44 ATTORNEY Patented Nov. 24, 1931- rim Qumran. ramrem,

. mum xunaeman,

OF GOTTENBORG, SWEDEN,

assrenoa *ro ax'rmaorladm" OF GOTTENBOBG, SWEDEN, A CORPORATION" 01' mrvrca roa mama nan. nraarar. m aoLLnre mus Application fled Iovembcr $8, 1928, Serial No. 409,787, and in Sweden December 1, 1928. I

' When rolling bar material, such as steel bars or the like, it is generally necessary to havea number of workmen on each side the mill to grip and support the bar by means of 1 5 tongs and move it from one pass in the rolls to another. For heavy dimensions it is also usual to employ lifting tables, tilting tables, etc., in which case, however, it is also frequently necessary to have a certain number of workmen to assist in handling the bar. en rolling round steel bars without guides,

the workmen in addition to the ordinary work are also required to hold and steady the bar while it preventit from twisting in the pass. This method of rollin requires, as a rule, more workmen than ot er rollin methods. Since the-workmen must go bac each bar, the work is very tiresome and the length of the bars must be limited, and the speed of the mill must be kept low, which, of

course, will tend to lower the output.

1 The present invention has for its object to simplify and chea n the rolling of such maat terial by eitherre i icing as much as possible the necessary number of workmen or else making ossible the rolling of appreciably greater engths at a considerably higher 1 s ed than what has heretofore been possiao bl The essential feature of the invention consists in the provision of a movable gripping and sup rting member .for holding the bar material cooperating with mechanical motion transmitting devices for moving the bar material from one pas in the rolls to another.

These motion transmitting members can here be made and arran d in such a manner that it is possible to eitggr move the bar material in its longitudinal direction or turn it about an axis parallel with this direction. The motion transmitting members can also be so made and arranged that the bar material can be turned about an axis at right angles to the direction mentioned above so that the end of the bar nearest the rolling mill can either be raised or lowered and brought in a position.

o posite a roll pass either aboveor below. e motion transmittin members can, fur- '50 thermore, be arranged or moving the bar is being rolled in order to and forth with material in a direction parallel "to itself. With the motion transmitting members which are intended to move the bar material in a longitudinal direction it is also possible to combine devices for opening or closing the grilpping members. y means of such an arrangement it will thus be possible to grip, turn, and raise or' move and support the bar material mechani-y cally without the use of manual power. For eifecting the various motions it is suitable to arrange electric motors that can be operated independently of each other from a common operating station, which can be attended by H oneman. p The device being rotatable about a shaft parallel with the longitudinal direction of the ar material it also possesses the combined features of the ordinary lifting table and tiltin table, and the cost will not be higher than or a tilting table, lifting table, etc. with appurtenant live roller gear beds and the like. above mentioned, it also has the additional advantage that the bar material will be handled purely mechanically, and that the number ofworkmen can be ap reciably reduced. The device will be used to greatest advantage in the rolling of round material without guides inasmuch as the reduction of the number of workmen will be greater while at the same time the production will be increased by the possibility of rolling greater len ha and increasing the speed. I

he accompanying .drawings show one form of a device according to the inventioh. Fig. 1 is a section along the line 1-1 of Fig.

ig. 2 is a top view. F Fig. 3 is a section along the line 3-3 of I i 1. b ig. tie a section along the line 4-4 of -Fig. 1, showing a detail in the mechanism for closing the grippin arrangement.

Fig. 5 1s a sectlon along the line 5-5 of Fig. 1, showing the shape of the running a; groove, and

Fig. 6 is a view looking at the right hand end of Figs. 1 and 2. y

In Fig. 1 the rolling mill is shown at 1 as a three-high mill with rolls 2, 3, and 4. The 10.

rails 12 with the aid motion of the motor is transmitted to the .gear

' fastened to the carriage carriage to be moved u carria "aiid wife by means of-the pinion 13 fixed to the motor shaft and the bevel gear 14. The bevel 14 and the sheave 11 are mounted on a shaft 15. The wire is at both ends 7 thus enabling the m both directions, When the front end of the bar has passed through the mill, the jaws 5 and 6 and continues into a guide 16 provided for its guidance and support. The guide 16is fixe to and movable with the 7. When the bar has continued a suitab distance, the carriage is set in motion by means of the motor '8. As the carria e moves to the right, a wheel 17 movab y mounted in a vertical direction on the carrialge and acted upon by a strong spri 18 wi follow the surface of a cam 19 whic is given such a she that the wheel will move upwards. The. links 20 and 21 cooperating with the jaws 5 and 6 are thus raised. The

common its ends connected to the link 20. Theg'aw on the other hand, turns about a stu 23 bears with its other end against a lever 24 which rotates about a stud 25 and is at one 4 the rails for holding the carriage on the rails of its ends connected-to the link 21. When.

the links 20 and 21 are raised, the jaws 5 and 6 will then approach each other and 'p the bar. In order to support the bar w enthe carriage is moved to the fixed to the rails 12.

It is now possible to turn the bar 90 about the axis of bearings 26 and 27 and bring it be-' tween the rolls 2 and 3. If desired, it is, however, possible to turn the bar 45 or an other desired angle. This is madepossible t rou the fact that the entire upper part'with t e carriage 7, rails 12, suppo 8 can turn in bearings 26and 27. The turning movement is imparted by the motor 28 which, by means of a'universaljoint 29, drives a worm 31 mesh with the worm wheel in the housmg32. The motion c n, of course, also be imparted through any 0t er suitable connection between the motor and the rotatable rail system. The distance between the awe and the axis of rotation canbe chosen so t at after the turning movement is completed the bar will'be situated immediately in front of a pass between the rolls 2 and 3. The arrangement of the carriage wheels and during the rotation will be seen from Fig. 3. The rails 12 are four in number and placed crosswise. ,The carriage is rovided with wheels 42, four 'at each end. e wheels are the motor 8 and awire 9 running on sheaves 10 and 11. The

it enters the gap between jaw '5 turns about a stud 22 and is at one ofwith counterweighta '58.

right, asupport 54 is.

rt 54, and the motor arranged in such a manner that the caning: in all positions is supported by two whee at each end. In order to make it possible for the entire machinery to be moved parallel to itself it is mounted on wheels 33 which run on rails 34. The motion may be obtained from a motor 35 mounted on a pair of longitudinal girders 36. By means of the pinion 37 and the Y gear 38 the motor 'drives a s each end is fitted with a pinion 40 in mesh aft 39 which at i with the gear 41 fixed to the wheels 83. l I

. -In cases where the bar is not ,to be turned or turned in any other angle than 90 the arrangement of the device is designed or a tilting mot-ion. For tilting it is provided with a fourth motor 43 moiinted on a. bracket 44 at the end nearest to the rolling mill. The motor 43 is connected to the shaft 45 through the worm gear 46, the pinion 47 and the ear v48. When the motor is set in motion;the s aft 45 is turned, brin mg with it the levers 49 attached thereto, is ese levers being at their one end connected to a link 50 connected by means of an articulated joint'to the be ring housing 26 at 51. The rails 12 willthas be raised by the motor at the end nearest the mill turning on bearings 52. mounted on the bearing housing 27 at the With a view to facihtating the tilting, the levers 49 are at their other ends provided Having described m was, {t is and desire to secure by, tters Paten 1. A device for handli able pin member cooperating with mechani c a fmotion transmitting means for. mov

ing the bar material from one pass the rolls. to another, and means actuated by the movementpf the grip ing membentocloaa t mPpi sm he work."

0 ,posite end of the bar material in rolhng mills characterized y annually- 2. Adeviceasclaimedinclaimlehaa'acter ized by the entofthe-meehanicalmotion transmitting-means infl which the movement ot'the bar takes placefabout an that of the hanlmd located from the axis offthe bar that uponthecompletion of the turning movement the "bar iwili be situated axis parallel to at such a distance ately in front of a pas in the'rolls.

8. A device as claimed in claim 1 characterised by the arrent of the mechanical motion transmitting means irl which the movement of the bar takes place about an axis perpendicular to that of the bar in such a manner that the end of the bar nearest the mill is swung in a vertical direction from one pass to another.

4. A device for handlin bar material in rolling mills characterized y an axially movable gripping member cooperating with mechanlcal motlon transmitting means for moving the bar material from one pass in the rolls to another about an axis parallel to that of the barand in a longitudinally thereof, mechanism for oPemng' and closing v the gipping member an means for operating e same upon the longitudinal movement- 5 thereof.

5. A device for han bar material in rolling mills characterized y an axially movable gri ping member cooperating with mechamca motion transmitting means for movi the bar material from one pass in the r dfis to another about an axis parallel to that of the bar and in a direction longitudinall thereof, and a series of electric motors, each operated independently from a common operating station, for imparting motion to the veriousmotion transmitting means.

6. A device of the-character ified, the combination with a carriage, o a series of rails upon which the carriage is adapted to be shifted, combination with a. bar gripping device mounted upon the carriage, and means for rota the system of rails about an axis parallel with their general direction of disposition, the organization being such that the carriage is sup rted by at least two rails 111 any position 0 the system.

- PER GUN'NAB PALMGREN. 

